Finding the Fourth Proportional to 712,672.68, 983,453.36 and 390,384.21
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Solution
The fourth proportional to 712,672.68, 983,453.36 and 390,384.21 is: 538,711.07
Step by Step Solution
- Step 1: Write the proportion equation
712,672.68 : 983,453.36 = 390,384.21 : x - Step 2: Convert to fraction form
712,672.68/983,453.36 = 390,384.21/x - Step 3: Cross multiply
712,672.68x = 983,453.36 × 390,384.21 - Step 4: Simplify right side
712,672.68x = 383,924,661,063.53 - Step 5: Solve for x
x = 383,924,661,063.53/712,672.68 - Step 6: Final answer
x = 538,711.07
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.